If nothing else encourages to question things surely this does. Two weeks ago the "experts" were telling us masks were a waste of time. Now the experts (which apparently now includes the mayor of New York) are saying they are almost mandatory. Is it the same experts? Is it different experts? (and who gives them that expert qualification)?
The message I've tried to spread here (to no avail it would seem) is to question EVERYTHING. Don't believe anything you're told or read without giving it the utmost scrutiny. Not everything the experts say is fact, often it's an opinion clouded by the same fears that drive the rest of us.